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Prostate

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https://www.readbyqxmd.com/read/28317152/-68-ga-psma-pet-for-radiation-treatment-planning-in-prostate-cancer-recurrences-after-surgery-individualized-medicine-or-new-standard-in-salvage-treatment
#1
Gregor Habl, Katharina Sauter, Kilian Schiller, Sabrina Dewes, Tobias Maurer, Matthias Eiber, Stephanie E Combs
BACKGROUND: (68) Ga-PSMA-PET imaging is a novel promising diagnostic tool to locate early biochemical failure after radical prostatectomy (RP) in prostate cancer (PC) patients. Exact knowledge of the relapse location may result in changes of the therapy concept aside from changes to the TNM stage. To gain data for this approach, we evaluated PC patients receiving (68) Ga-PSMA-PET imaging before salvage radiotherapy (RT). METHODS AND MATERIALS: In this study, 100 patients with biochemical failure after RP± prior RT who underwent (68) Ga-PSMA PET/CT or PET/MRI were evaluated undergoing salvage RT in our department...
March 20, 2017: Prostate
https://www.readbyqxmd.com/read/28317149/association-between-variants-in-genes-involved-in-the-immune-response-and-prostate-cancer-risk-in-men-randomized-to-the-finasteride-arm-in-the-prostate-cancer-prevention-trial
#2
Danyelle A Winchester, Cathee Till, Phyllis J Goodman, Catherine M Tangen, Regina M Santella, Teresa L Johnson-Pais, Robin J Leach, Jianfeng Xu, S Lilly Zheng, Ian M Thompson, M Scott Lucia, Scott M Lippman, Howard L Parnes, William B Isaacs, Angelo M De Marzo, Charles G Drake, Elizabeth A Platz
BACKGROUND: We reported that some, but not all single nucleotide polymorphisms (SNPs) in select immune response genes are associated with prostate cancer, but not individually with the prevalence of intraprostatic inflammation in the Prostate Cancer Prevention Trial (PCPT) placebo arm. Here, we investigated whether these same SNPs are associated with risk of lower- and higher-grade prostate cancer in men randomized to finasteride, and with prevalence of intraprostatic inflammation among controls...
March 20, 2017: Prostate
https://www.readbyqxmd.com/read/28295408/circulating-tumor-cells-as-a-marker-for-progression-free-survival-in-metastatic-castration-na%C3%A3-ve-prostate-cancer
#3
Andreas Josefsson, Anna Linder, Despina Flondell Site, Giacomo Canesin, Anna Stiehm, Aseem Anand, Anders Bjartell, Jan-Erik Damber, Karin Welén
BACKGROUND: Analysis of circulating tumor cells (CTC) is a promising prognostic marker in castration-resistant prostate cancer (CRPC). The aim of this study was to investigate CTC detection and phenotyping as prognostic biomarkers for response to primary androgen deprivation therapy (ADT) of metastatic prostate cancer (PC). METHODS: PC patients presenting with a prostate specific antigen (PSA) >80 ng/ml and/or metastatic disease, intended for ADT were enrolled in the study...
March 10, 2017: Prostate
https://www.readbyqxmd.com/read/28261834/the-association-of-diabetes-and-obesity-with-prostate-cancer-progression-hcap-nc
#4
Saira Khan, Jianwen Cai, Matthew E Nielsen, Melissa A Troester, James L Mohler, Elizabeth T H Fontham, Laura H Hendrix, Laura Farnan, Andrew F Olshan, Jeannette T Bensen
BACKGROUND: The role of race in modifying the association among diabetes, obesity, and prostate cancer (CaP) progression is not well studied. We evaluated diabetes and obesity in association with time to CaP progression in White Americans (Whites) and Black Americans (Blacks). METHODS: Our study sample consisted of 363 White and 284 Black research participants from the Health Care Access and CaP Treatment in North Carolina (HCaP-NC) cohort. The association between self-reported diabetes or obesity and CaP progression (mean follow-up time approximately 5 years) was assessed using Cox proportional hazards modeling, with adjustment for potential confounders...
March 6, 2017: Prostate
https://www.readbyqxmd.com/read/28247425/estimating-heritability-of-prostate-cancer-specific-survival-using-population-based-registers
#5
Robert Szulkin, Mark S Clements, Patrik K E Magnusson, Fredrik E Wiklund, Ralf Kuja-Halkola
BACKGROUND: There is a strong genetic component in prostate cancer development with an estimated heritability of 58%. In addition, recent epidemiological assessments show a familial component in prostate cancer-specific survival, which could be due to either common genetics or environment. In this study we sought to estimate the heritability of prostate cancer-specific survival by studying brothers and father-son pairs in Sweden. METHODS: We used linkage records from three Swedish national registers: the Multi-Generation Register, the Cancer Register, and the Cause of Death Register...
March 1, 2017: Prostate
https://www.readbyqxmd.com/read/28247415/novel-monoclonal-antibodies-recognizing-human-prostate-specific-membrane-antigen-psma-as-research-and-theranostic-tools
#6
Zora Nováková, Catherine A Foss, Benjamin T Copeland, Volker Morath, Petra Baranová, Barbora Havlínová, Arne Skerra, Martin G Pomper, Cyril Barinka
BACKGROUND: Prostate-specific membrane antigen (PSMA) is a validated target for the imaging and therapy of prostate cancer. Here, we report the detailed characterization of four novel murine monoclonal antibodies (mAbs) recognizing human PSMA as well as PSMA orthologs from different species. METHODS: Performance of purified mAbs was assayed using a comprehensive panel of in vitro experimental setups including Western blotting, immunofluorescence, immunohistochemistry, ELISA, flow cytometry, and surface-plasmon resonance...
March 1, 2017: Prostate
https://www.readbyqxmd.com/read/28240424/intraductal-carcinoma-of-the-prostate-on-diagnostic-needle-biopsy-predicts-prostate-cancer-mortality-a-population-based-study
#7
Thorstein Saeter, Ljiljana Vlatkovic, Gudmund Waaler, Einar Servoll, Jahn M Nesland, Karol Axcrona, Ulrika Axcrona
BACKGROUND: Intraductal carcinoma of the prostate (IDC-P) is a distinct histopathologic feature associated with high-grade, advanced prostate cancer. Although studies have shown that IDC-P is a predictor of progression following surgical or radiation treatment for prostate cancer, there are sparse data regarding IDC-P on diagnostic needle biopsy as a prognosticator of prostate cancer mortality. MATERIALS AND METHODS: This was a population-based study of all prostate cancer patients diagnosed using needle biopsy and without evidence of systemic disease between 1991 and 1999 within a defined geographic region of Norway...
February 27, 2017: Prostate
https://www.readbyqxmd.com/read/28240383/targeting-th17-il-17-pathway-in-prevention-of-micro-invasive-prostate-cancer-in-a-mouse-model
#8
Qiuyang Zhang, Sen Liu, Dongxia Ge, David M Cunningham, Feng Huang, Lin Ma, Thomas P Burris, Zongbing You
BACKGROUND: Chronic inflammation has been associated with the development and progression of human cancers including prostate cancer. The exact role of the inflammatory Th17-IL-17 pathway in prostate cancer remains unknown. In this study, we aimed to determine the importance of Th17 cells and IL-17 in a Pten-null prostate cancer mouse model. METHODS: The Pten-null mice were treated by Th17 inhibitor SR1001 or anti-mouse IL-17 monoclonal antibody from 6 weeks of age up to 12 weeks of age...
February 27, 2017: Prostate
https://www.readbyqxmd.com/read/28240376/iap-antagonists-enhance-apoptotic-response-to-enzalutamide-in-castration-resistant-prostate-cancer-cells-via-autocrine-tnf-%C3%AE-signaling
#9
Amanda B Pilling, Ok Hwang, Alain Boudreault, Alain Laurent, Clara Hwang
BACKGROUND: Castration-resistant prostate cancer (CRPC) remains incurable and identifying effective treatments continues to present a clinical challenge. Although treatment with enzalutamide, a second generation androgen receptor (AR) antagonist, prolongs survival in prostate cancer patients, responses can be limited by intrinsic resistance or acquired resistance. A potential mechanism of resistance to androgen axis inhibition is evasion of apoptosis. Inhibitor of apoptosis proteins (IAPs) are found to be overexpressed in prostate cancer and function to block apoptosis and promote survival signaling...
February 27, 2017: Prostate
https://www.readbyqxmd.com/read/28230260/elevation-of-sharpin-protein-levels-in-prostate-adenocarcinomas-promotes-metastasis-and-impairs-patient-survivals
#10
Hai Huang, Tao Du, Yiming Zhang, Yiming Lai, Kaiwen Li, Xinxing Fan, Dingjun Zhu, Tianxin Lin, Kewei Xu, Jian Huang, Leyuan Liu, Zhenghui Guo
BACKGROUND: SHARPIN, SHANK-associated RH domain interacting protein, associates with a linear ubiquitin chain assembly complex (LUBAC) to regulate inflammation and immunity. It has been reported that SHARPIN is highly expressed in several human tumors including ovarian cancer and liver cancer. We found that SHARPIN is also highly expressed in prostate cancer cell lines of DU145, LNCAP, and PC-3. Suppression of SHARPIN caused an inhibition of NF-κB signal and decreases in tumorigenesis of cultured cells in NOD/SCID mouse model...
February 23, 2017: Prostate
https://www.readbyqxmd.com/read/28224650/androgen-receptor-splice-variants-are-not-substrates-of-nonsense-mediated-decay
#11
Atinuke S Ajiboye, David Esopi, Srinivasan Yegnasubramanian, Samuel R Denmeade
BACKGROUND: Androgen receptor (AR) splice variants have been clinically associated with progressive cancer, castration-resistance, and resistance to AR antagonists and androgen synthesis inhibitors. AR variants can be generated by genomic alterations and alternative splicing, and their expression is androgen-regulated. There has been a suggestion that AR variants bearing premature termination codons and coding for truncated proteins should be regulated by the nonsense-mediated decay (NMD) mRNA surveillance pathway, suggesting that either the NMD pathway is dysfunctional in variant-expressing cell lines or that variants are somehow able to evade degradation by NMD...
February 22, 2017: Prostate
https://www.readbyqxmd.com/read/28191652/goniothalamin-and-celecoxib-effects-during-aging-targeting-pro-inflammatory-mediators-in-chemoprevention-of-prostatic-disorders
#12
Larissa Akemi Kido, Fabio Montico, Débora Barbosa Vendramini-Costa, Ronaldo Aloise Pilli, Valeria Helena Alves Cagnon
BACKGROUND: Prostate is highly affected by aging, which lead to inflammatory disorders that can predispose to cancer development. Chemoprevention has emerged as a new therapeutic approach, intensifying studies evaluating the biological properties of new compounds. The aim of this study was to characterize the inflammatory responses in the prostate ventral lobe from senile mice treated with Goniothalamin (GTN), a promising natural compound with anti-inflammatory and antiproliferative properties...
February 13, 2017: Prostate
https://www.readbyqxmd.com/read/28191651/the-development-of-prostate-adenocarcinoma-in-a-transgender-male-to-female-patient-could-estrogen-therapy-have-played-a-role
#13
Asma Sharif, Neha R Malhotra, Andres M Acosta, Andre A Kajdacsy-Balla, Maarten Bosland, Grace Guzman, Gail S Prins, Michael R Abern
BACKGROUND: Prostate adenocarcinoma (PCa) is a rare diagnosis in the male to female transgender (MtFT) population with only a few case reports published in the current medical literature. Long standing beliefs of androgen suppression conferring a protective effect against prostate cancer development have been challenged by the literature citing adenocarcinoma development in the prostate of rodent models following combined estrogen and testosterone treatment. MATERIALS AND METHODS: We herein present a MtFT patient who presented with high grade PCa following 20 years of exogenous estrogen therapy...
February 13, 2017: Prostate
https://www.readbyqxmd.com/read/28181686/the-effect-of-a-histone-deacetylase-inhibitor-ar-42-on-canine-prostate-cancer-growth-and-metastasis
#14
Said M Elshafae, Nicole A Kohart, Lucas A Altstadt, Wessel P Dirksen, Thomas J Rosol
BACKGROUND: Canine prostate cancer (PCa) is an excellent preclinical model for human PCa. AR-42 is a histone deacetylase inhibitor (HDACi) developed at The Ohio State University that inhibits the proliferation of several cancers, including multiple myeloma, lung, and hepatocellular cancer. In this study, we investigated whether AR-42 would prevent or decrease. The growth and metastasis of a canine PCa (Ace-1 cells) to bone in vitro and in vivo. METHODS: Proliferation, cell viability, invasion, and metastasis of a canine prostate cancer cell line (Ace-1) were measured following treatment with AR-42...
February 9, 2017: Prostate
https://www.readbyqxmd.com/read/28181685/effects-of-estrogen-receptor-%C3%AE-stimulation-in-a-rat-model-of-non-bacterial-prostatic-inflammation
#15
Shinsuke Mizoguchi, Kenichi Mori, Zhou Wang, Teresa Liu, Yasuhito Funahashi, Fuminori Sato, Donald B DeFranco, Naoki Yoshimura, Hiromitsu Mimata
BACKGROUND: There is increasing evidence showing that chronic non-bacterial prostatic inflammation is involved in the pathogenesis of benign prostatic hyperplasia (BPH) and male lower urinary tract symptoms (LUTS). It has also been reported that estrogen receptor β (ERβ) could have an immunoprotective role in prostatic tissue. Therefore, we investigated the effect of ERβ-activation on not only prostatic inflammation, but also bladder overactive conditions in a rat model with nonbacterial prostatic inflammation...
February 9, 2017: Prostate
https://www.readbyqxmd.com/read/28181681/appearance-of-high-endothelial-venule-like-vessels-in-benign-prostatic-hyperplasia-is-associated-with-lower-urinary-tract-symptoms
#16
So Inamura, Tomochika Shinagawa, Hitomi Hoshino, Yasuhiro Sakai, Yoshiaki Imamura, Osamu Yokoyama, Motohiro Kobayashi
BACKGROUND: Chronic prostatic inflammation is implicated in the pathogenesis of benign prostatic hyperplasia (BPH)-associated lower urinary tract symptoms (LUTS). Previous studies evaluated the degree of chronic prostatic inflammation based on histological scores, which may contain subjective factors. We previously demonstrated that the number of high endothelial venule (HEV)-like vessels correlates positively with the magnitude of inflammation in chronic inflammatory gastrointestinal diseases...
February 9, 2017: Prostate
https://www.readbyqxmd.com/read/28181678/safety-and-immunological-efficacy-of-a-dna-vaccine-encoding-the-androgen-receptor-ligand-binding-domain-ar-lbd
#17
Brian M Olson, Eric S Bradley, Thomas Sawicki, Weixiong Zhong, Erik A Ranheim, Jordan E Bloom, Viswa T Colluru, Laura E Johnson, Brian T Rekoske, Jens C Eickhoff, Douglas G McNeel
BACKGROUND: The androgen receptor (AR) is a key oncogenic driver of prostate cancer, and has been the primary focus of prostate cancer treatment for several decades. We have previously demonstrated that the AR is also an immunological target antigen, recognized in patients with prostate cancer, and targetable by means of vaccines in rodent models with delays in prostate tumor growth. The current study was performed to determine the safety and immunological efficacy of a GMP-grade plasmid DNA vaccine encoding the ligand-binding domain (LBD) of the AR, pTVG-AR...
February 9, 2017: Prostate
https://www.readbyqxmd.com/read/28181675/a-placebo-controlled-double-blinded-randomized-pilot-study-of-combination-phytotherapy-in-biochemically-recurrent-prostate-cancer
#18
M Diana van Die, Scott G Williams, Jon Emery, Kerry M Bone, Jeremy M G Taylor, Elizabeth Lusk, Marie V Pirotta
BACKGROUND: Men with biochemical recurrence of prostate cancer following local therapies often use natural supplements in an attempt to delay metastases and/or avoid the need for more aggressive treatments with undesirable side-effects. While there is a growing body of research into phytotherapeutic agents in this cohort, with some promising results, as yet no definitive recommendations can be made. This pilot study was undertaken to assess the feasibility of a fully-powered study to examine the effects of this phytotherapeutic intervention (containing turmeric, resveratrol, green tea and broccoli sprouts) on PSA doubling time in men with biochemical recurrence with a moderate PSA rise rate...
February 9, 2017: Prostate
https://www.readbyqxmd.com/read/28168724/identification-of-fibulin-1-as-a-human-bone-marrow-stromal-hs-5-cell-derived-factor-that-induces-human-prostate-cancer-cell-death
#19
Kornkamon Lertsuwan, Leila H Choe, Irene R Marwa, Kelvin Lee, Robert A Sikes
BACKGROUND: Previous studies showed that human bone marrow stromal HS-5 cells secreted unidentified factor(s) inducing PCa cell death. Herein, the HS-5-derived factor (HS-5 DF) was characterized and identified. METHODS: Conditioned media from confluent HS-5 cells were collected and modified for biochemical characteristic testing of HS-5 DF. Cell survival was measured by apoptosis assay and live/dead assay. Fibulin-1 was identified from gel electrophoresis and mass spectrometry...
February 7, 2017: Prostate
https://www.readbyqxmd.com/read/28168722/androgen-deprivation-accelerates-the-prostatic-urethra-wound-healing-after-thulium-laser-resection-of-the-prostate-by-promoting-re-epithelialization-and-regulating-the-macrophage-polarization
#20
Xing-Jie Wang, Jian Zhuo, Guang-Heng Luo, Yi-Ping Zhu, Dian-Jun Yu, Rui-Zhe Zhao, Chen-Yi Jiang, Yun-Feng Shi, Hao Li, Lei Chen, Kui-Yuan Hao, Xia Han, Sheng Zhao, Xiao-Yu Bei, Yi-Feng Jing, Shu-Jie Xia
BACKGROUND: Complications after a thulium laser resection of the prostate (TmLRP) are related to re-epithelialization of the prostatic urethra. Since prostate growth and development are induced by androgen, the aim of this study was to determine the role and explore the mechanism of androgen in wound healing of the prostatic urethra. METHODS: Beagles that received TmLRPs were randomly distributed into a castration group, a testosterone undecanoate (TU) group, and a control group...
February 7, 2017: Prostate
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